body {
	padding-top: 20px;
	padding-bottom: 20px;
	background-image: url('https://liuzhongyang.com/static/grey-prism-63478a91.svg');
}

.navbar {
	margin-bottom: 20px;
}

/* .footer {
	position: absolute;
	bottom: 0;
	height: 60px;
	background-color: #f5f5f5;
} */